Working Theory

The exhaust gas oxygen sensor – had been invented by Bosch - is a small sensor screwed into the snowmobile’s exhaust system to measure the concentration of O2 remaining in the exhaust gas to make enable an Electronic Control Module to control the efficiency of the combustion process in the chambers. In modern Sleds, these sensors are attached to the engine's exhaust pipe after the manifold to determine whether the mix of air and gasoline going into the cylinder is rich or lean. This information is delivered to your Ski-Doo Grand Touring LE 600's engine management, which adjusts the air fuel mix to deliver the best possible fuel efficacy and lowest possible exhaust emissions.

Restore factory power capability and optimum fuel efficiency as if your Ski-Doo Grand Touring LE 600 was new from factory.

Bosch patented ceramic technology affords best-in-class performance. The ceramic element is a critical part of the exhaust o2 sensor. Bosch's patented materials and processes ensure unprecedented quality and engine performance. Also it sounds reassuringly, major Snowmobile manufacturers place their trust in Bosch air fuel sensors. Why replace? Failure of these oxygen sensors, either through normal aging, the use of leaded fuels, or due to fuel contamination with eg. silicones or silicates, can lead to ruined power and lower fuel economy.

Compatibility

Our Bosch sled exhaust gas oxygen sensor is available to all Sleds fitted with lambda probes, torqued in M18 x 1.5mm threaded nut. This lambda sensor will fit your Ski-Doo Grand Touring LE 600 if it is fitted with M18 exhaust gas oxygen sensor. This sensor doesn’t replace M12 sensors. Not quite sure this lambda probe fits your Ski-Doo Grand Touring LE 600? Feel free to contact our Tech Support. Our trained Magnum product specialists are looking forward to respond to your inquiry. Heavy exhaust modifications trigger the service engine soon light. In this instance the replacement of the exhaust o2 sensor will not remedy MIL issues. If so, you need to hook up oxygen sensor simulator to the oxygen sensor(s)' harness in order to get rid of ECM safe mode causes the Sled run inefficiently ruining both engine performance and fuel economy.

Snowmobile Oxygen sensors are recommended to be replaced after each 30.000 miles - 48.000 km.

A Snowmobile exhaust gas oxygen sensors are subject to extreme conditions due to high heat. A properly functioning exhaust o2 sensor significantly affects the basis for reliable engine operation and thus fuel consumption, emissions, and exhaust gas values. In common sense Bosch oxygen sensors are unbeatable thanks to their long longevity, excellent operation, and optimum engine compatibility. They make a fundamental contribution to gas saving the riders money and protecting the environment.It is not unlike on emission controlled Ski-Doo Grand Touring LE 600

Good to know that Bosch invented the exhaust oxygen sensor and it is first choice for exhaust air fuel sensors throughout the world. An annual production of around 38 million lambda probes impressively demonstrates the high quality and knowledge delivered by Bosch. It therefore comes as no surprise that most Customers riding Ski-Doo Grand Touring LE 600 preferably choose a Bosch o2 sensor when replacement interval passed.

Packing List

1 x Genuine Bosch Oxygen sensor

4 x Bullet Terminal

1 x Installation Instructions

Oxygen sensors are used to reduce vehicle emissions, by ensuring that engines burn their fuel efficiently and cleanly. Robert Bosch GmbH introduced the first automotive lambda probe in 1976. The sensors were introduced in the US from about 1980, and were required on all models of cars in many countries in Europe in 1993. By measuring the proportion of oxygen in the remaining exhaust gas, and by knowing the volume and temperature of the air entering the cylinders amongst other things, an ECU can use look-up tables to determine the amount of fuel required to burn at the stoichiometric ratio (14.7:1 air:fuel by mass for gasoline) to ensure complete combustion. When an internal combustion engine is under high load (such as when using wide-open throttle) the oxygen sensor no longer operates, and the engine automatically enriches the mixture to both increase power and protect the engine.

Internal Design

The sensor element is a ceramic cylinder plated inside and out with porous platinum electrodes; the whole assembly is protected by a metal gauze. It operates by measuring the difference in oxygen between the exhaust gas and the external air, and generates a voltage or changes its resistance depending on the difference between the two. The sensors only work effectively when heated to approximately 300°C, so most lambda probes have heating elements encased in the ceramic to bring the ceramic tip up to temperature quickly when the exhaust is cold. The probe typically has four wires attached to it: two for the lambda output, and two for the heater power.

Operation of the Zirconia O2 Sensor

The zirconium dioxide, or zirconia, lambda sensor is based on a solid-state electrochemical fuel cell called the Nernst cell. Its two electrodes provide an output voltage corresponding to the quantity of oxygen in the exhaust relative to that in the atmosphere. An output voltage of 0.2 V (200 mV) DC represents a lean mixture. That is one where the amount of oxygen entering the cylinder is sufficient to fully oxidize the carbon monoxide (CO), produced in burning the air and fuel, into carbon dioxide (CO2). A reading of 0.8 V (800 mV) DC represents a rich mixture, one which is high in unburned fuel and low in remaining oxygen. The ideal point is 0.45 V (450 mV) DC; this is where the quantities of air and fuel are in the optimum ratio, called the stoichiometric point, and the exhaust output will mainly consist of fully oxidized CO2. The voltage produced by the sensor is so nonlinear with respect to oxygen concentration that it is impractical for the electronic control unit (ECU) to measure intermediate values - it merely registers "lean" or "rich", and adjusts the fuel/air mixture to keep the output of the sensor alternating equally between these two values. This type of sensor is called 'narrow band', referring to the narrow range of fuel/air ratios to which the sensor responds. The main disadvantage of narrow band sensors is their slow response: the control unit determines the exhaust gas composition by averaging the high and low swings in the sensor's output, and this process creates an inevitable delay Not quite sure this oxygen sensor fits your Snowmobile? Feel free to contact our Tech Support. 7 trained Magnum representatives are looking forward to respond to your inquiry.

Please read instructions before installation.

REQUIRED SKILL LEVEL: Basic Skill Required REQUIRED TOOLING: Basic Hand Tools Required ESTIMATED TIME OF INSTALLATION: up to 60 Minutes This Bosch oxygen sensor installs universal. You need to cut the harness of existing sensor and establish connections on wires across Snowmobile harness and new sensor wires, with shielded bullet connectors or soldering. Setup can be conducted in less than 60 minutes by a mechanical minded installer being slightly inclined with electronics.

Disconnect old oxygen sensor connector from Snowmobile harness using extra care not to damage connector, as it must be re-used.

Remove old sensor from Snowmobile using an O2 sensor socket or 22mm wrench. Place the old and new oxygen sensors side by side on a flat surface, preparing to make an accurate cut of the lead wires. Cut the lead wire(s) to a length that when the plug end is spliced to the new universal sensor, the overall length will be the same or slightly longer than the old sensor.

Stagger-cut wire lead(s) stripping off approx. 1/4” of insulation from the end of each wire. For steps #4 and #5 please refer to the Manufacture Wire Colors image to determine proper wire matching of universal sensor lead(s) to connector lead(s) for each specific application (heater wires are not polarity dependant).A) On universal sensors where heat-shrink tube(s) are already installed: insert just striped portion of wire(s) into crimp terminals of new sensor and crimp terminals. B) On universal sensors where heat-shrink tube(s) are not installed: insert just striped portion of wire(s) into crimp type "butt" connectors (approx. 1/4”) and crimp.

After all connections have been made, slip the heat shrink tube over the crimped connections and heat the tube with an appropriate heat source until the connection is completely sealed, taking care not to over-heat or burn tubing see image.

Remove protector cap just prior to installation A) Flanged applications-(where flange is not already installed on sensor) Install flange to exhaust manifold first, then mount sensor in flange (a copper gasket is bonded to the flange no additional gasket is required) B) Flanged applications- (where flange is already installed on sensor) it is important to use the supplied gasket before installing sensor).

Heavy exhaust modifications like decats, catless exhaust systems or headers trigger check engine light. In this instance the replacement of the oxygen sensor will not sort out CEL/MIL issues. If so, you need to wire up oxygen sensor simulator in order to get rid of ECU safe mode causes the engine run inefficiently spoiling both power and fuel efficiency.

This Bosch oxygen sensor installs universal. You need to cut the harness of existing sensor and establish connections on wires across Snowmobile harness and new sensor wires, with shielded bullet connectors or soldering. Setup can be conducted in less than 60 minutes by a mechanical minded installer being slightly inclined with electronics.

Used as OEM replacement

Used as OEM replacement in my Lynx Ranger and thus far bosch sensor seems to work like the factory oxygen sensor. Hookup was a blip so i do recommend this product backed by pro' technical customer support.

this o2 probe did not fit

my sled was fitted with the slim M12 sensors so this o2 probe did not fit, return process wa easy and they put evry wheel into motion to indeminfy me. Fact is though i was wasting my time, still will try them again

Couldn't be better, this oxygen sensor is equivalent to the OEM sensor for the fracture of the price. Wiring is worry free. Don't make your factory dealer rich by buying their OEM sensor for a lump of dough.

I bought a set of these sensors for my MXZ Adrenaline. I put off doing my oxygen sensors for a long time, but then a month ago I broke one of my sensor doing head work, I figured it was time I just bit the bullet and replaced it. Bosch quality is undoubted. The service they give is exceptional, thanks for the small gift!

Went with this Bosch, haven't had a problem

Never had a problem with Denso before but lust time I got my product from (removed) wired it up and it turned off my mil after about a few hours. Light came back on and returned to O2 sensor. Went with this Bosch, haven't had a problem. Easy to fit, splendid tech support, I has question pertaining to color response. they reply was prompt and instructive. Highly recommended.

Ramp up performance in your sled with our adjustable fuel tuner. Your engine has amazing amounts of power just waiting to be unleashed. This ECU chip is the fastest and easiest way for converting that potential into raw horsepower and torque. Want to see your sled run like a nuclear powered rocket? Unlock your engine's performance potential with the EVO-Tech fuel controller in less than 30 minutes. Put an end to the lagging factory lean fuel trim settings with this performance chip. Tune your ride for increased power.

Advance your sled’s performance capabilities with our adjustable fuel controller. With Smart ECU chip, release serious gains in horsepower and torque, improve throttle response and fuel economy. Your snowmobile is starving for horsepower boost? Get ultra-responsive performance out of this ECU chip box. This performance chip wires inline with the signal wire of Intake Air Temp sensor and plugs into the exhaust oxygen sensor harness on emission-controlled bikes in order to recalibrate fuel maps for peak performance. Magnum backs all ECU chips with a 10-year warranty.

Ski-Doo Grand Touring LE 600

We carry a wide selection of Ski-Doo lambda probe types of varying fuel efficiency / had been reduced to worn oxygen sensor/ levels in our user friendly web shop catalog. With some basic Snowmobile information and a couple of mouse clicks, you will soon have the best options for your particular Grand Touring LE 600 model in front of you. In very little time after your order, you will have your new Grand Touring LE 600 Sled Bosch Oxygen Sensor in your hand and ready to install, thanks to our fast shipping and full service. Do not forget, we are the manufacturer. Get yourself the parts necessary for Grand Touring LE 600 upgrade today! Your Ski-Doo will thank you for it down the line. Magnum lambda probe will give you amazing results in fuel efficiency / had been reduced to worn oxygen sensor/, riding power /restoring factory engine performance / and fuel economy. Proven tests made by Ski-Doo Grand Touring LE 600 owners. There is nothing to lose and everything to gain from installing a new Ski-Doo Sled Bosch Oxygen Sensor on your specific Grand Touring LE 600 engine. Installation is quite severe, you just need to fit this lambda probe on the exhaust of the factory engine and allow it develop its positive effects through the oxygen sensor signal. Read the comment of Carmen. Hello guys, item came so fast, i had to duck!!!!!! Great price too! Fast shipping, great merchandise. 5-star all around. Thanks Robert!!!!!!